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Model # H25-25200H Official Tecumseh 4-cycle engine
Here are the diagrams and repair parts for Official Tecumseh H25-25200H 4-cycle engine, as well as links to manuals and error code tables, if available.
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H25-25200H 4-Cycle Engine
#118
Basic engine diagram
Fuel line
Part #29774
The manufacturer no longer makes this part, and there's no substitute part
#40
Basic engine diagram
Element
Part #31410
The manufacturer no longer makes this part, and there's no substitute part
#27
Basic engine diagram
Plug
Part #27625
The manufacturer no longer makes this part, and there's no substitute part
#2
Carburetor diagram
Thrtle sprng
Part #631279
The manufacturer no longer makes this part, and there's no substitute part
#26
Basic engine diagram
Gasket
Part #27677
The manufacturer no longer makes this part, and there's no substitute part
#139
Basic engine diagram
Rewnd startr
Part #590420
The manufacturer no longer makes this part, and there's no substitute part
#5
Carburetor diagram
Spring
Part #630766
The manufacturer no longer makes this part, and there's no substitute part
#71
Basic engine diagram
Flat washer
Part #650490
The manufacturer no longer makes this part, and there's no substitute part
#109
Basic engine diagram
Spool
Part #30588A
The manufacturer no longer makes this part, and there's no substitute part
#106
Basic engine diagram
/gvnr shaft
Part #30574
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas line trimmers
Choose a symptom to see related grass line trimmer repairs.
Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…
Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…
Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…
Repair guides for gas line trimmers
These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

How to rebuild a line trimmer carburetor
If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…
Repair difficulty
Time required
15 minutes or less

How to replace a line trimmer carburetor
If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …
Repair difficulty
Time required
15 minutes or less

How to replace a line trimmer fuel line
The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…
Repair difficulty
Time required
15 minutes or less
Effective articles & videos to help repair your lawn & garden engines
Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Learn about the main parts of a lawn mower and when to replace parts.…